function submitButton_down_Clicked(){
	var arguments = "<content>";
	arguments = addTag(arguments, "username", getUserName());
	arguments = addTag(arguments, "title", document.getElementById("title_down_text").value);
	arguments = addTag(arguments, "body", document.getElementById("detail_down_text").value);
	var category_name = document.getElementById("type_down_text").value;
	if (category_name == "课程") {
		arguments = addTag(arguments, "category", "course");
	} else if(category_name == "生活") {
		arguments = addTag(arguments, "category", "life");
	} else if(category_name == "活动") {
		arguments = addTag(arguments, "category", "activity");
	} else if(category_name == "找对象") {
		arguments = addTag(arguments, "category", "find");
	} else if(category_name == "其他") {
		arguments = addTag(arguments, "category", "another");
	} 
	arguments = addTag(arguments, "date", document.getElementById("datepicker-example1").value);
	arguments = addTag(arguments, "reward", document.getElementById("forward_down_text").value);
	arguments += "</content>";
	var url = "CreatePost";
	sendXMLPost(url, arguments, null);
	//var title = document.getElementById("title_down_text").valueOf();
}
